Bosch SL1501B dishwasher doesn't drain water after the washing cycle. Also with new drain pump. What else could it be?
Sorry for my English, I'm writing from Italy. :-)
I have a Bosch SL1501B dishwasher.
After the washing cycle, lots of water remains in the bottom: the drain pump seemed to not work properly so I changed with a new one, that works better: I made the dishwasher drain in a bucket and during the cycle it fills it almost twice. But after the washing cycle, the water on the bottom is still there.
Then I have to manually lift the mushroom-shaped float and wait that it slowly drains all the water off the dishwasher.
What else could it be?
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Re: Bosch SL1501B dishwasher doesn't drain water after...
Check the following.
1. The drain hose has to be discharging at a high enough point to prevent water flowing back into the machine.
2. Make sure your drain hose is not twisted or kinked.
3 . Make sure your drain line is not blocked push a flexible hose down it to dislodge any fat/debris
4.If your drain line discharges into a shared drain with another appliance i.e. garbage disposal make sure it is not blocked.
5. You may have a blockage at the inlet to the pump which would slow down the pumping rate,
Since you mentioned the mushroom shaped float allowing the washer to empty this may be defective.
See the link attached.
Hope this helps.
Testimonial: "Thank you for your helpful answer! I completely disassembled the drain hose and it was twisted (didn't see it, it was hidden), and it cumulated fat stuff on that point, reducing the flow quite a lot.
Thanks again for your help!"
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I believe your drain pump filter is just clogged. The drain pump is
trying to pump the water out before the Spin cycle, but can't. Usually
this is caused by a foreign object that is obstructing the impeller. See
my tip on how to access, drain & clean the Drain Pump Filter:
I would check tosee if your water meaning hot water temp is hook up correctly. i have seen cold water going to machine and causing the machine to do funny things. 1 the unit drains.2. it fills.3.it washes if the water is cold there is your problem .make sure b4 you start machine the water going in is hot. let me know how you made out maybe we can further check. p.s im a old bosch tech:)
your model is pretty new. just so you know your warrenty is 1 year parts and labor. 2 years on parts. it should not cost that much money.
there are two components that start before the circulation pump.(wash noise you hear)
first sounds you hear will be the drain pump. usually rattling noises if something is in it but it can make a hum noise if something is jamming the drain propeller up. which is accessible with a T20 torx driver. take the filters out and the mesh filter. and unscrew the screw in the base towards the left. pull out whatever is lodged.
the other humming sound can come from the next component that activates is the watervalve. make sure you dont have a kinked water intake line. otherwise its a bad valve. i have had to change a few of those water valves out already but not for a hum noise on your model. you have a new style water valve. when brands make new parts we get problems fast sometimes..
Check for hose kinks or food plugging drain hose. Start at the drain port exit. Check the check valve and drain hose for debris. Check pump motor for reversing during the pump out make sure the dishwasher is pausing between the wash and drain cycles letting the pump/motor reverse for the drain cycle. Check pump motor assembly for a drain solenoid, during the pump out make sure the solenoid makes that distinctive "clunk" noise If you have recently installed a new garbage disposal, check knock-out plug at connection.
Check pump impeller for damage. Check that the water inlet valve isn't seeping fresh water into the dishwasher when off.
I have a Bosch Dishwasher and the E-Nr is SGS4362EU/03. The machine is approximately 4 years old, in good condition and has been working very well. Suddenly, there is water remaining after it completes a 50 degrees C wash cycle. This is also evident with the pre wash cycle and the 65 degrees wash cycle.
I have checked and cleaned the filters. I have loosened the internal pump white cover (Torx T 20 screw) and checked for any physical blockage - none. I have also checked for any drainage hose kinks - none.
I have tried a series of empty washes and the machine drains the water during the wash cycles. The dishes are also have a dull colour and show show signs of not being properly rinsed during the wash cycle.
Same problem, so went out and bought a new bosch. Problem with the S510 was cured by lubricating the pump out motor bearings with a squirt of WD 40. If you don't know which pump, follow outlet hose to pump outlet. Les
Im really not all that familiar with the bosch unit, but a few things i would ck. when you cancel a cycle (it should drain the water) is it humming??? does it sound as if it even trickling into the sink discharge?? do you have a disposer under your sink that this unit drains into, if so remove the clamp and look for possible obstructions right there.Honestly passed this ill have to defer to someone else sorry and good luck